I posted on the main Pregnancy board earlier about a smaller-than-desired fetus on my 7-week scan Thursday, but as my EDD is late March, I wondered if any of you might have gone through this...
I was freaked out when the technician told me I'd need a follow-up scan next week to see if things were going to develop properly, and, yes, regrettably, started Googling.
Heart rate was 141 bpm. It should be between 120-180 bpm at 7 wks. So that?s actually okay.
Crown rump length was 7.8 mm, which equates to an age of 6 wks 4 days. A bit behind, but not bad.
Gestational sac diameter was 20.1 mm, which equates to an age of 6 wks 2 days. Slightly less good.
My HUGE concern: yolk sac diameter was 4.9 mm. Normal would be 2.9 mm. I've found a dozen studies that say a larger than normal YS is associated with adverse outcome in the fetus. In general, a YS diameter of greater than 5.6 mm before 10 weeks is predictive of embryonic demise or gross chromosomal abnormality.
As mentioned, I'm freaking out. And what I don't understand is why what seems to be the scariest piece of the puzzle, the yolk sac, wasn't even MENTIONED by the technician.
I don't know how I'm going to last until the next scan on Wednesday.